electrical engineering MCQs – Page 95

Practise multiple-choice questions from electrical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

electrical engineering Mcqs
1. economics of power generation2. analog electronics3. solid state switching circuits4. parallel circuits5. switchgear and protection6. op amp circuits7. transistor audio power amplifiers8. electrostatics9. heating and welding10. multi stage transistor amplifiers11. passive filters12. network theorems13. regulated d c power supply14. a c fundamentals circuits and circuit theory15. electromagnetic induction16. power electronics17. magnetism and electromagnetism18. transformers19. modulation and demodulation20. d c generators21. semiconductor theory22. single phase induction motors23. semiconductor diode24. hybrid parameters25. digital electronics26. oscillators27. earthing or grounding28. single stage transistor amplifiers29. d c motors30. transistor biasing31. amplifiers with negative feedback32. basic electrical33. electronic instruments34. synchronous motors35. field effect transistors fet36. magnetic circuit37. control systems38. industrial drives39. power generation40. series parallel circuits41. transistor tuned amplifiers42. electrical engineering materials43. rectifiers and converters44. integrated circuits45. scr silicon controlled rectifiers46. cables47. polyphase induction motors48. measurement and instrumentation49. transistors50. electrical machine design51. electrolysis and storage of batteries52. electric traction53. transmission and distribution
1881. Conductivity is analogous to____________?
comments icon0

A. inductance

B. retentivity

C. permeability

D. resistivity

1882. ____________field is associated with the capacitor?
comments icon0
A. Electric

B. Magnetic

C. Both (A) and (B)

D. None of the above

1883. Two coils have inductances of 8 mH and 18 mH and a co-efficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be______________?
comments icon0
A. 38 mH

B. 48 mH

C. 32 mH

D. 40 mH

1884. Mutually inductance between two magnetically-coupled coils depends on____________?
comments icon0

A. the number of their turns

B. permeability of the core

C. all of the above

D. cross-sectional area of their common core

1885. When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will______________?
comments icon0

A. increase

B. become zero

C. remain uncharged

D. decrease
1886. For which of the following parameter variation, the capacitance of the capacitor remains unaffected ____________?
comments icon0

A. Area of the plates

B. Nature of dielectric

C. Thickness of the plates

D. Distance between plates

1887. Lenzs law is a consequence of the law of conservation of__________?
comments icon0

A. charge

B. energy

C. induced e.m.f.

D. induced current

1888. The dielectric constant (relative permittivity) of glass is given by___________?
comments icon0
A. 5 to 100

B. 2.0 to 4.0

C. 0.1 to 0.4

D. 0.5 to 1.0

1889. Which of the following cell has a. reversible chemical reaction ___________?
comments icon0

A. Silver-oxide

B. Lead-acid

C. Carbon-zinc

D. Mercury oxide

1890. The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be____________?
comments icon0

A. 36 x 108 N

B. 36 x 10fa

C. 36 x 109 N

D. 36 x 107 N

1891. For making a capacitor, it is better to select a dielectric having___________?
comments icon0

A. permittivity slightly more than that of air

B. low permittivity

C. high permittivity

D. permittivity same as that of air

1892. Those magnetic materials are best suited for making armature and transformer cores which have ________ permeability and ________ hystersis loss
comments icon0

A. low, high

B. high, high

C. low, low

D. high, low
1893. A region around a stationary electric charge has__________?
comments icon0
A. an electric field

B. a magnetic field

C. both A. and (6)

D. none of the above

1894. In alkaline cell the electrolyte is_____________?
comments icon0

A. dilute sulphuric acid

B. KOH

C. NaOH

D. concentrated sulphuric acid

1895. Which of the following capacitors will have the least value of breakdown voltage________ ?
comments icon0
A. Electrolytic

B. Paper

C. Ceramic

D. Mica

1896. The direction of induced e.m.f. can be found by_____________?
comments icon0

A. Kirchhoff s voltage law

B. Flemings right hand rule

C. Lenzs law

D. Laplaces law

1897. For a good 0.05 uF capacitor ohmmeter reading should___________?
comments icon0

A. go quickly to 50 ohm approximately and remain there

B. show low resistance momentarily and back off to a very high resistance

C. show high resistance momentarily and then a very low resistance

D. not move at all

1898. The absolute permittivity of free space is given by_____________?
comments icon0

A. 8.854 x 10?12 F/m

B. 8.854 x KT11 F/m

C. 8.854 x 1(T9 F/m)

D. 8.854 x 1(T10 F/m)
1899. Which among the following constitutes the major load for an automobile battery _________?
comments icon0

A. Spark plugs

B. Self starter

C. Parking lights

D. Brake light

1900. For closer tolerances which of the following capacitors is usually preferred ?
comments icon0
A. Mica capacitor

B. Paper capacitor

C. Ceramic disc capacitor

D. None of the above